ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
Latest Magazine Issues
Jul 2024
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Nuclear Science and Engineering
August 2024
Nuclear Technology
Fusion Science and Technology
Latest News
Oklo completes end-to-end demonstration of advanced fuel recycling
Oklo Inc. has announced that it has completed the first end-to-end demonstration of its advanced fuel recycling process as part of an ongoing $5 million project in collaboration with Argonne and Idaho National Laboratories. Oklo’s goal: scaling up its fuel recycling capabilities to deploy a commercial-scale recycling facility that would increase advanced reactor fuel supplies and enhance fuel cost effectiveness for its planned sodium fast reactors.
Wei-Wu Chao, Jay F. Kunze, Weimin Dai, Sudarshan K. Loyalka
Nuclear Technology | Volume 105 | Number 2 | February 1994 | Pages 261-270
Technical Paper | Heat Transfer and Fluid Flow | doi.org/10.13182/NT94-A34927
Articles are hosted by Taylor and Francis Online.
Research reactors present a different set of operating conditions than do light water (power) reactors (LWRs). Thermal-hydraulic transient/safety codes, such as the Reactor Loss of Coolant Analysis Program (RELAP), have been verified against experimental data from several test facilities designed for the operating conditions of LWRs. However, the operating pressures, temperatures, fuel type, and flow direction are quite different in most high-power research reactors. Furthermore, the coolant (water) in these reactors generally is not degasified and hence contains dissolved air. Results are given of benchmark experiments compared with RELAP predictions for the conditions encountered during a loss-of-coolant accident for a typical research reactor.